PlayerController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerController : MonoBehaviour
{
    [SerializeField] private float moveSpeed;
    private float bounds = 4.5f;
    
    void Start()
    {
        
    }

   
    void Update()
    {
        Move();
    }

    void Move()
    {
        float moveInput = Input.GetAxisRaw("Horizontal");

        Vector2 playerPosition = transform.position;
        playerPosition.x = Mathf.Clamp(playerPosition.x + moveInput * moveSpeed * Time.deltaTime, -bounds, bounds);
        transform.position = playerPosition;
    }
}